Tongs.



No. 785,462. PATENTE]? MAR. 21, 1905.

' J. G. WINGER.

TONGS.

APPLICATION FILED NOV. 25, 1904.

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ATTORNEYS No.7s5,4.e2.

UNITED STATES Fatented March 21, 1905.

JOSIAH G. WINGER, OF GRAND VALLEY, PENNSYLVANIA.

TONGS.

SPECIFICATION forming part of Letters Patent No. 785,462, dated March21, 1-905.

Application filed November 25, 1904. Serial No. 234,178.

To all whom it may concern:

Be it known that I, JosIAH G. VVINGER, a citizen of the United States,and a resident of Grand Valley, in the county of Warren and State ofPennsylvania, have invented a new and Improved Tongs, of which thefollowing is a full, clear, and exact description.

The invention relates to tongs intended particularly for gripping pipeand other round objects. They are especially useful in connection withoil and Artesian wells for holding the casing-collars during the timethe pipesections are being engaged with or disengaged therefrom.

The device comprises a handle on which two peculiarly-arranged jaws aremounted, the structure being such that upon operating the handle thejaws may be caused to 'move toward or from the object being gripped, andthese jaws coacting with a gripper on the handle serve securely to holdthe pipe,casingcollar,or other part against turning movement in eitherdirection.

Reference to the accompanying drawings shows as an example the preferredembodiment of my invention, in which drawings like letters of referenceindicate like parts, and in which Figure 1 is a perspective view of theinvention in use. Fig. 2 is an enlarged plan view, parts being brokenaway and in section, showing the jaws, the adjacent end of the handle,and the manner of mounting the jaws, and also illustrating the positionof these parts with respect to the pipe or collar when the tongs areactive; and Fig. 3 is a sectional elevation on the line 3 3 of Fig. 2.

(0 indicates the handle, which is provided at its inner end portion withoppositely-situated cam-surfaces b. Inward from these surfaces thehandle is formed with oppositely-situated sockets c, and at its innerextremity a cavity (Z is formed. In this cavity is located agripping-roller 0, preferably having annular teeth thereon and mountedby a pin f, which is fastened on the inner end of the handle and extendsacross the cavity (Z, as shown most clearly in Fig. 2.

9 indicates the dogs, which are two in number and located one at eachside of the inner portion of the handle. At their freeor active ends thedogs are provided with screws h, threaded in the ends of the dogs andforming grippers adapted to engage the pipe or other object Z. It willbe observed that these grippers are adjustable, so as to readily adaptthe tongs to objects of various sizes. The rear or outer extremities ofthe dogs are adapted, respectively, to bear on the cam-surfaces 5, andsaid dogs are provided intermediate their ends with studs 2',respectively entered into the sockets c. The dogs are held in thisposition and are allowed to rock the studs r; in thesockets c by meansof two links in, which are located one above and one below the dogs andare connected therewith by pins or bolts m. In this manner it will beobserved that the dogs are mounted not only to swing around the pins orbolts m, rocking the studs 2' in the sockets 0, but the dogs are alsoallowed to swing around the centers of the studs '11, so as' to ride theends of the dogs along the camsurfaces 6. In the use of the device thegrippers 7L shoul be adjusted properly to engage the pipe, casingcollar,or other object with which the tongs are used, and the handle a shouldbe raised, as shown in Fig. 1, so as to allow the free or active ends ofthe dogs to move apart and permit the tongs to be passed around theobject gripped, the gripping-roller@engaging the object, as shown inFig. 2. After this has been done the handle should be thrown down, thusforcing together the active ends of the dogs and causing the screws orgrippers h to impinge against the pipe. This, it will be observed, holdsthe pipe securely at three points of contact and effectually pre-' ventsturning the pipe in either direction. Owing to this arrangement thepipe-sections may be screwed or unscrewed without readjusting the tongs.As long as pressure is exerted on the handle the tongs will be active;but the instant the handle is raised slightly pressure on the jaws isrelaxed and the jaws may be readily moved apart to disengage the part.

Various changes in the form. proportion, and details of my invention maybe resorted to at will Without departing from the spirit and scopethereof. Hence I consider myself entitled to all such variations as maylie within the intent of my claims.

Having thus described my invention, I claim as new and desire to secureby Letters Patent 1. Tongs comprising two intermediatelypivoted dogs,and a handle located between the dogs and arranged to swing around anaxis crossing the axes of the pivots of said dogs, the handle beingcapable of being wedged in between the dogs at one end of the dogs toforlce the dogs toward each other at the other enc.

2. Tongs comprising two intermediatelypivoted dogs, and a handle locatedbetween the dogs and arranged to swing around an axis crossing the axesof the pivots of said dogs, the handle being capable of being wedged inbetween the dogs at one end of the dogs to force the dogs toward eachother at the other end, the center of the swinging movement of thehandle being intermediate the ends thereof, and one end portion of thehandle projecting toward the working ends of the dogs to coact with thework.

3. Tongs comprising two intermediatelypivoted dogs,ahandle locatedbetween the dogs and arranged to swing around an axis crossing the axesof the pivots of said dogs, the handle being capable of being wedged inbetween the dogs at one end of the dogs to force the dogs toward eachother at the other end, the center of the swinging movement of thehandle being intermediate its ends and one end of the handle projectingtoward the working ends of the dogs, and a gripper mounted on said endof the handle and adapted to engage the Work.

at. Tongs comprising two dogs, means extending between the ends andpivotally connected thereto intermediate their ends to allow the dogs toswing toward and from each other,

and a handle located between the dogs and pivoted thereto on an axiscrossing the axes of the pivots of the dogs, the handle and dogs havingcoacting surfaces at one end of the dogs whereby upon forcing the handletoward the dogs the dogs are forced together at the opposite end.

5. Tongs comprising two dogs,a link extending between the dogs, pivotsconnecting the dogs with the link intermediate the ends of the dogs, ahandle fitted between the dogs, and a means mounting the handle to swingon an axis crossing the axes of said pivots of the dogs,the handlecoacting with the dogs at one end to force the dogs to move toward eachother at the other end.

6. Tongs comprising two dogs, a l ink extending between the dogs, pivotsconnecting the link with the dogs intermediate the ends of the dogs,studs projecting from the inner sides of the dogs, and a handle fittedbetween the dogs and having cavities in which the studs are looselyreceived.

7 Tongs comprising two dogs,a link extending between the dogs, pivotsconnecting the link with the dogs intermediate the ends of the dogs,studs projecting from the inner sides of the dogs, a handle fittedbetween the dogs and having cavities in which the studs are looselyreceived, said cavities in the handle being intermediate the endsthereof,and one end of the handle projecting toward the work, and agripper attached to one end of the handle and ad apted to engage thework.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

JOSIAH G. WINGER.

